CN201594768U

CN201594768U - Punching sheet of electric machine stator

Info

Publication number: CN201594768U
Application number: CN2009202807467U
Authority: CN
Inventors: 刘国平; 彭雄文
Original assignee: QINGDAO HAILI METAL MOTOR CO Ltd
Current assignee: QINGDAO HAILI METAL MOTOR CO Ltd
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2010-09-29
Anticipated expiration: 2019-12-09

Abstract

The utility model relates to the improvement of the inner structure of an electric machine, in particular to a punching sheet of an electric machine stator. The punching sheet has the following technical scheme that the existing punching sheet is designed to be formed by a plurality of smaller units. The punching sheet specifically comprises an I-shaped unit, wherein at least the outside outer edge of the I-shaped unit is in the shape of arc, and the length of the inner side is less than the following value: the length of the outer side*the distance from the inside outer edge to the circle center of the outside outer edge/the radius of the outside outer edge. With the design, the punching sheet leads each I-shaped unit to be independently formed in a punching way, thereby being good for distributing board materials when machining, for example, the each I-shaped unit can be independently formed on a long stripe-shaped board material in a punching way, and achieving the aims of material saving and cost reducing to the maximum extent.

Description

Motor stator punching

Technical field

The utility model relates to the improvement of internal structure of motor, specifically a kind of motor stator punching.

Background technology

The making of conventional motors stator punching is directly by the machine punch forming with silicon steel sheet, because the special construction that brush DC is clicked, rotor portion is a permanent magnet material, do not need to adopt silicon steel sheet as rotor core, so silicon steel sheet is after punch forming, the inner-diameter portion whose of its blanking can not be utilized becomes waste material, has reduced the utilance of material.

Summary of the invention

For solving the problems of the technologies described above, the utility model provides a kind of motor stator punching, has improved the utilance of material.

The technical solution of the utility model is that existing punching is designed to how many smaller units be made of, specifically comprise the I-shaped unit, at least the outer rim of its outside of I-shaped unit is an arc, and interior edge lengths is less than following numerical value: outer edge lengths * inner edge is outward to the distance/outside outer rim radius in the outer rim center of circle, outside.A plurality of I-shapeds unit connects and composes a circle, and its outside promptly forms the yoke portion of a chip, and mid portion and inner edge promptly form its tooth portion.To the requirement of edge lengths in it, be in order to guarantee after combination, to form the notch of chip.This design of the utility model makes each I-shaped unit punch forming separately, thereby helps adding the cloth of sheet material in man-hour, for example can punching press finish on the sheet material of strip, thereby realize saving material, the purpose that reduces cost most possibly.

When each I-shaped unit was connected, they can directly connect, and also can join by other link of centre.For direct-connected situation, then need outer edge lengths greater than inner edge.Generally need mutual interlock between its end face, but from designing and processing simple angle, the two ends, outside are preferably along its outer rim straight flange radially.The groove that also can make the two ends, outside have projection respectively and adapt with projection makes the projection of adjacent two I-shaped unit and groove cooperate when connecting.

Because interior edge lengths is shorter, can the outer rim that it is relative with the outside be designed to straight flange, but the preferred design arc concentric with the outside outer rim.At this moment, inner edge outer rim to the distance in the outer rim center of circle, outside is the radius of inner edge outer rim, and promptly the size of inner edge outer rim is less than outer edge lengths * inner edge outer rim radius/outside outer rim radius.

The utility model has changed the just certain directly conglobate mindset of punching press of traditional circular punching, but silicon steel sheet is washed into the strip punching that becomes to include stator teeth and yoke portion, again punching is wound into circle, thereby saved the raw material of original stator punching inner-diameter portion whose, stock utilization can improve more than 40%.

Description of drawings

Fig. 1 is the structure chart of embodiment one;

Fig. 2 is the machining state figure of embodiment one;

Fig. 3 is the user mode figure of embodiment one;

Fig. 4 is the structure chart of embodiment two;

Fig. 5 is the machining state figure of embodiment two;

Fig. 6 is the user mode figure of embodiment two;

Wherein, 1, groove, 2, the outside, 3, the outside outer rim, 4, projection, 5, inner edge, 6, inner edge outer rim.

Embodiment

Embodiment one:

As shown in Figure 1, the I-shaped structure of present embodiment comprises outside 2, inner edge 5 and connects both mid portion.This I-shaped structure is with the center line symmetric design of mid portion, and the outer rim of outside 2 and inner edge 5 is arc, and two arcs are concentric.The two ends of outside 2 are along its outer rim straight flange radially.Outside 2 length is greater than inner edge 5 length, and the length of inner edge 5 is less than following numerical value: outer edge lengths * inner edge outer rim radius/outside outer rim radius.

Present embodiment add man-hour the cloth situation as shown in Figure 2, it can be implemented in cloth on the strip sheet material, saves material to greatest extent, reduces cost.

Situation during the use of present embodiment as shown in Figure 3.

Embodiment two:

As shown in Figure 4, the I-shaped structure of present embodiment comprises outside 2, inner edge 5 and connects both mid portion.This I-shaped structure is with the center line symmetric design of mid portion, and the outer rim of outside 2 and inner edge 5 is arc, and two arcs are concentric.The two ends of outside 2 are along its outer rim straight flange radially, and two ends have groove 1 and projection 4 respectively.Outside 2 length is greater than inner edge 5 length, and the length of inner edge 5 is less than following numerical value: outer edge lengths * inner edge outer rim radius/outside outer rim radius.

Present embodiment add man-hour the cloth situation as shown in Figure 5, the situation the during use of present embodiment is as shown in Figure 6.

Claims

1. motor stator punching, it is characterized in that: it comprises the I-shaped unit, at least the outer rim of its outside (2) of I-shaped unit is an arc, and inner edge (5) length is less than following numerical value: outer edge lengths * inner edge outer rim is to the distance/outside outer rim radius in the outer rim center of circle, outside.

2. motor stator punching according to claim 1 is characterized in that: outside (2) length is greater than inner edge (5).

3. motor stator punching according to claim 1 and 2 is characterized in that: two ends, outside (2) are along its outer rim straight flange radially.

4. motor stator punching according to claim 1 and 2 is characterized in that: the groove (1) that two ends, outside (2) have projection (4) respectively and adapt with projection (4).

5. motor stator punching according to claim 1 and 2 is characterized in that: inner edge (5) outer rim is the arc concentric with the outside outer rim, and inner edge (5) length is less than following numerical value: outer edge lengths * inner edge outer rim radius/outside outer rim radius.